# Readify vs MistakeBook

The clearest difference is price: Readify at Free against MistakeBook's $1.99. MistakeBook's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.1). On update cadence, ads and device support there is nothing between them.

Readify is free to download; MistakeBook costs $1.99 up front. Readify sells 2 in-app purchases, starting at $0.99 per month. MistakeBook asks for nothing beyond the download.

Readify ships an update every 4 weeks, MistakeBook monthly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Readify | MistakeBook |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | — | Paid |
| Size | 114 MB | 26 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Charles Abetz](https://appshunter.io/developer/1502690178) | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) |

## What reviewers say

### Readify

[App page](https://appshunter.io/ios/app/readify/id6478643928)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Australia | $0.99 | per month |
| Australia Subscription | $12.99 | per year |


### MistakeBook

[App page](https://appshunter.io/ios/app/mistakebook-wrong-answer-log/id6770173206)

Log and review incorrect answers to improve learning. Organize mistakes by subject and topic, and utilize spaced repetition to reinforce weak areas. Track progress with visual charts and daily check-ins for effective test preparation.

**Highlights:** Log mistakes with photos and notes, Organize by subject and custom tags, Spaced repetition review mode, Ebbinghaus forgetting curve schedule, Progress charts and stats dashboard, Data import/export backup

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Readify free?

Readify is free to download, with in-app purchases available.

### Is MistakeBook free?

MistakeBook costs $1.99, with no in-app purchases.

### Do Readify or MistakeBook have ads?

Neither Readify nor MistakeBook shows ads.

### Which is updated more often, Readify or MistakeBook?

Readify ships an update every 4 weeks, and MistakeBook monthly. Most recently, Readify was updated on November 4, 2026 and MistakeBook on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*